This currently deploys the core services for a working Swift which are
account/container/object/proxy.

I've included some basic docs in docs/swift-related.rst, which gives
usage instructions and more context on this patch. These are really to
give an overview of the state of Swift in Kolla as of now, so unless
there's some major inaccuracy there please don't nitpick it.

Change-Id: Id0c54be3e24c46459c40b16b7020f05bddbe1b19
Implements: blueprint ansible-swift

Change-Id: I07e105a5638ad9fde67e58bf371dffda64563a53
Partially-Implements: blueprint remove-config-internal

Known bugs/TODOs at this time of this patch update:

https://bugs.launchpad.net/kolla/+bug/1477990
https://bugs.launchpad.net/kolla/+bug/1477993



Implements: Blueprint swift-container
Closes-bug: #1477992
Co-Authored-By: Paul Bourke <paul.bourke@oracle.com>
Change-Id: I031f88a7cd1867104fef12df6ab3ffcc06cb65d6

Change-Id: I95ddd7d77d41d7239465a34abd9691abcdcfbb81
Closes-Bug: #1474233

Partially Implements: Blueprint standard-start

Change-Id: I0c9fea2014a23ca0b08f9a0946472cc877edacbc

The only files in the docker image directories that differ majorly between
distros are the Dockerfiles (e.g. different package manager mechanisms,
different repo sources, etc).

The supporting files such as the start.sh/check.sh and config files should
largely stay the same between base images.

This change moves these files up into a "common" directory, and symlinks them
in the same way that the build script is managed. This means when adding a new
base distro only new Dockerfiles need to be created. Also, if a distro does
happen to require a vastly different start.sh script for example, one can
choose to simply not symlink to the common and instead drop in a custom one.

Implements: blueprint refactor-base-image-layout

Change-Id: Ic4db69d31ff54a1fb95af4853a2e5ae490064284

As a restructure, nothing is changed from the original behaviour and
naming despite the file structure changing. The symlinks to build had
to be updated generating lots of "deleted" and "new_file".

The new structure is:

docker/${base_distro}/${type}/${container}

base_distro == centos, ubuntu, fedora, etc
type == source, binary, rdo

type rdo is a symlink to binary for backwards compatibility

Two new flags are added to the build-all script to support the ability
to support different base distros and a flag to support binary or source
containers.

There are several added folders that are empty to hold the directory
structure for future containers of these types.

To use a prefix other than centos-rdo- you can set PREFIX in the toplevel
directory .buildconf file

Change-Id: Ifc7bac0d827470f506c8b5c004a833da9ce13b90

Unify the shell to bash in all Kolla scripts.

Change-Id: Ib9591b2f8f344eb88455c5e9b7ecf2164fb5960a
Implements: blueprint use-bash-shell

Implements: blueprint kube-ceilometer-container

Change-Id: Ic9be6f2fb57641aa77f7f3a31481b166adad3f36